Gas-lamp.



N0. 786,014. PATENTED MAR. 28, 1905. J. DOORENBOS.

GAS LAMP. APPLICATION FILED MAY 12, 1904.

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PATENTED MAR. 28, 1905.

J. DOORENBOS.

GAS LAMP. APPIJIOATION FILED MAY 12, 1904.

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J, DOORENBOS.

GAS LAMP.

APPLIOATION FILED MAY 12, 1904.

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Ira/6%?" UNITED STATES Patented March 28, 1905.

JOHN DOORENBOS, OF NEW YORK, N. Y.

GAS-LAMP.

SPECIFICATION forming part of Letters Patent NO. 786,014, dated March28, 1905.

Application filed May 12, 1904. Serial No. 207,524.

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Be it known that I, JOHN DOORENBOS, a citi: zen of the United States,residing at New York, in the county and State of New York, have inventeda new and useful Improvement in Gas- Lamps, of which the following is aspecification.

My invention relates particularly to gaslamps for outdoor use; and myprimary object is to provide improved means for guarding against Windand at the same time to provide a structure of greater durability andmore pleasing appearance than any heretofore known.

The invention is illustrated in the accompanying drawings, in whichFigure 1 is an elevational view of a streetlamp embodying myimprovements; Fig. 2, an enlarged sectional view of the upper portion ofthe lamp, the section being taken as indicated at line 2 of Fig. 1; Fig.3, a similar view, but showing the mantle-shield in its lowermostposition; Fig. 4, a plan section taken as indicated at line 4 of Fig. 2;Fig. 5, an enlarged broken vertical section of the lower portion of thelamp; Fig. 6, a section taken as indicated at line 6 of Fig. 5; Fig. 7,a view of a valve employed, and Fig. 8 a detail of a pilot-burneremployed.

In the illustrated preferred construction, A represents a pipe equippedat its upper end with a nipple, by means of which it may be suspendedfrom a gas-pipe, and provided at its lower end with a cap a, to whichare attached the mantle-supports; A, a branch pipe connected with themain pipe a short distance above the lower end thereof; B, a burnerbodysuspended from the lower end of the branch pipe; B, a depressibleglobe-support sustained by a spring-held catch 6; B a globe supported bythe member B and which may be lowered therewith to permit access to themantles or to enable the globe to be cleaned; B a valve controlling theadmission of gas to the mixer-chamber; C, a chimney located above theglobe and supported by the pipe A; C, an internal mantle-shield havingpin-andslot connection therewith to enable it to be lowered to protectthe mantles when the globe is lowered; (1 a shade supported by thechimney, and D a pilot-burner supported from the base of the lamp.

The burner-body B has a central mixerchamber 6', a hollow head I)communicating therewith and equipped with a plurality of burner-tips 5 alateral descending gas-passage V, a hollow boss 7f, connected with thebranch pipe A and in communication with the passage 6, and a baseportion Z), connected by screws with a ring 5 supported by lugs 5 at thelower end of the main portion of the burner-body. This provides spacesZ) for the admission of air to the lower portion of the mixer-chamberZ). The member Z) has a passage 1) which registers with the lower end ofthe passage 6" and intersects the bore of the valve B The valve B has atransverse passage o which when the valve is in the position shown inFig. 1 connects the passage 5 with a passage 6 leading to the tip 5below the mixer-chamber. There is also a passage 5 communicating withthe pilot-burner and intersecting the bore of the valve B Said valve isprovided with a passage 7), which in one position of the valve suppliesgas from the passage b to the passage 6, through which the pilot-burneris supplied.

The globe-support B comprises an inner cylindrical member 6 fittingsnugly upon the casing b of the burner-body and slidable verticallythereon, and an upwardly-flaring member 6 joined at its lower portion tothe lower portion of the member 6 The members Z) 6 are preferably formedintegrally with each other, and the member I) has an internal an nularshoulder upon which is supported a screen I). The member I) is providedabove said screen with air-inlets'd. The lower end of the cylindricalguide or casing b is provided with spiral air-admission slots 5 and theinner member Z) of the globe-support is provided beneath the screen 6with slots Z2 at right angles to the slots 5. The valve B is providedwith operating-arms b 7) at substantially right angles to each other.The arm 1/ projects into the path of the globesupport, so that when thelatter is drawn downwardly upon the casing I) as a guide the valve isautomatically operated to shut ofi the supply to the mainburner-orifices. During the operation and just prior to the shutting offof the supply to the main burner-orifices the supply to the pilot-burneris turned on.

The chimney comprises a cylinder 0, an inverted hollow frusto-conicalmember 0, having peripheral flanged connection with the upper end of thecylinder oand provided with a central pipe-receiving perforation, ahollow frusto-conical member 0, having at its base a short cylindricalportion secured within the cylinder 0 and having its upper end locatedslightly below the lower end of the member 0, a hood ordome 0 having aperforate center receiving the pipe A and provided peripherally with adownturned flange, an upwardlyflaring flange or fixed wind-shield 0having its lower end closely encircling the cylinder 0 and its upper endlocated within the lower portion of the flange of the hood, from whichit is separated by a small annular space 0", a vertically-corrugatedcylinder 0, of non-corrosive material, inclosing the exposed portion ofthe cylinder 0, and an annular hood 0 secured to the cylinder 0 near itslower end and having an annular shoulder beneath which the shade (l isreceived, the lower portion of said last-named hood being spaced fromthe cylinder 0 to receive the upper end of the shade.

The upper end of the cylinder 0 is provided with perforations to permitpassage of gases. The hood 0 has a flat annular portion bearing upon theflange of the member 0' and is removably secured thereto by screws 0*.The hood, preferably, is of copper or bronze and has a central hollowboss receiving the pipe A, and whereat it is secured to said pipe by aset-screw 0". The cylinder 0 has a vertical slot 0 and the cylinder 0has a registering slot. The cylinder 0 is preferably formed by formingcorrugated brass or bronze sheet metal and connecting the vertical edgesthereof with a binding-strip o having a slot 0 registering with theother slot mentioned. A handle 0 is provided with a shank working insaid slots and having its inner end connected with the shield C. At theupper end of the slots is an offset or bay affording a shoulder forsupporting the shield in its elevated position.

The pilot-burner D comprises a tube supported on the base 6 and havingits upper end adjacent to the group of main burner-orifices and equippedwith a tip (if, having a small orifice d, regulated by a horizontalscrew (Z In outdoor lamps it is important to maintain a comparativelylarge passage to the tip of the pilot-burner and provide for adjustmentof the passage at a point within the globe, where suflicient heat willbe maintained to prevent the minute passage from becoming choked withwater of condensation. This prevents the flame from going out, as oftenhappens in those constructions where provision for regulation occurs ator near the base of the lamp.

It is only necessary to remark concerning the manner of use that themantle-shield may be lowered preparatory to lowering the globe,

the globe freely receiving the shield. The branch pipe is at asufficient distance from the axis of the chimney to be out of the zoneof intense heat and yet lies within the scope of the shield C. Theconstruction at the upper end of the chimney is such as to prevent theoperation of the lamp from being interfered with from that quarter bygusts of wind, and the construction at the lower portion of the lamp issuch that while all the air necessary to perfect combustion is admittedto the lamp violent winds may be withstood without causing the lamp togo out or flicker objectionably.

The members 0 c c are circumferentially corrugated, and the envelop 0 islongitudinally corrugated. All of the exposed parts are preferably ofcopper, brass, or bronze, and a particularly pleasing appearance resultsfrom the construction.

Changes in details within the spirit of my invention are contemplated.Hence no undue limitation should be understood from the foregoingdetailed description.

What I regard as new, and desire to secure by Letters Patent, is

1. In a lamp, the combination of a chimneycylinder having a perforateupper end, an inner downturned hollow frusto conical top member securedthereon and depending into said perforate end, a surmounting hoodencircling said perforate end, and a pipe extending through said hoodand inner top member and supporting the chimney structure, for thepurpose set forth.

2. In a lamp, the combination of a chimneycylinder having a perforateupper end, a windshield encircling said cylinder below its perforateportion, and a hood surmounting said cylinder and having an annularflange inclosing said Wind-shield and separated therefrom by a shortspace, for the purpose set forth.

3. The combination of a chimney-cylinder, equipped near its upper endwith an encircling wind-shield, a hood having an annular flangeencompassing said wind-shield, a protectingcylinder of non-corrosivematerial inclosing said first-named cylinder beneath said windshield,said cylinders being provided with a vertical slot, a cylindricalmantle-shield within said first-named cylinder and equipped with ahandle projecting at said slot, and an annular hood encircling the lowerportion of said firstnamed cylinder, for the purpose set forth.

4. The combination of a chimney-cylinder having a perforate upper end, adownturned cone-frustum supported on the upper end of said cylinder andprovided centrally with a perforation, a hood surmounting said cylinderand having a central perforation, an upturned hollow cone-frustum withinsaid cylinder and connected therewith beneath its perforate portion, aninner cylindrical mantle-shield, and pin'and-slot connection betweensaid mantle-shield and said cylinder, for the purpose set forth.

5. The combination of a chimney-cylinder having a surmounting hood, anannular hood encircling the lower portion of said cylinder and havingits lower portion separated therefrom by a short space, said last-namedhood having an annular shoulder for receiving a shade, a shade supportedbeneath said annular shoulder, and a Bunsen burner and avertically-movable globe thereon having its upper end sheltered beneathsaid second named hood, for the purpose set forth.

6. The combination of a supporting-pipe having a closed lower end, aparallel non-axial branch pipe connected therewith near the lower endthereof, mantle-supports connected with said supporting-pipe, a Bunsenburner supported by said branch pipe, a vertically-movable globesupported on said burner, a chimney-cylinder having a surmounting hoodwith a central perforation receiving said support ing-pipe, saidchimney-cylinder being fixed to said supporting-pipe, and a shadesupported by said chimney, for the purpose set forth.

7. The combination of a chimney-cylinder having a vertical slot, aprotecting-envelop of sheet material having its vertical edges joined bya binding-strip equipped with a slot registering with said first-namedslot, a surmounting hood for said first-named cylinder, an annular hoodhaving a flange confined by the lower end of said protecting-envelop,and a mantle-shield within said chimney-cylinder and equipped with ahandle projecting through said slots, substantially as and for thepurpose set forth.

8. The combination of a supporting-pipe, a burner-body connectedtherewith, a globe-support guide, avertically-movable globe-support onsaid guide comprising an inner and-outer member, the outer member beingperforate in its upper portion and imperforate at its lower portion,ascreen between the outer and inner members of the globe-support belowthe perforate portion of said outer member, and a globe resting uponsaid globe-support, for the purpose set forth.

9. The combination of a Bunsen burner equipped at its upper end with aplurality of burner-orifices, a tubular guide inclosing the burner-bodyand provided at its lower end with a plurality of perforations, aglobe-support comprising an inner member equipped at its lower end witha plurality of perforations, and an outer member having a perfor ateupper portion and imperforate lower portion, and ascreen confinedbetween the members of said globe-support and located above theperforations of the inner member and below the perforations of the outermember of the globe-support, for the purpose set forth.

10. The combination of a burner body equipped at its upper end with aplurality of burner-orifices, a guide-cylinder connected with saidburner-body and provided at its lower end with perforations, and aglobesupport comprising an inner member fitting upon said guide-cylinderand provided at its lower portion with perforations registering with theperforations of the guide-cylinder, and an outer member formedintegrally with the inner member and provided at its upper portion withperforations, the junction between the outer and inner members being atthe lower ends thereof, for the purpose set forth.

11. The combination of a burner-body provided at its upper end with aplurality of burner-orifices, a base detachably connected with saidburner-body and equipped with a yielding catch for a globe-support, acylindrical guide connected with said burner-bod y, and provided at itslower portion with perforations, and a globe-support resting upon saidcatch and comprising an inner member slidable upon said cylindricalguide and provided at its lower portion with perforations, and an outermember connected at its lower portion with the lower portion of saidinner member, and flaring upwardly, said outer member being provided atits upper portion with perforations, for the purpose set forth.

12. In a street-lamp, the combination of a burner-body, avertically-depressible globesupport thereon, a globe depressibletherewith, and a fixed chimney equipped with a surmounting hood and ascreen thereat, said globe-support comprising an inner member providedat its lower end with air-inlets, an outer member provided at its upperend with air-inlets, and an annular screen confined between said innerand outer members beneath said last-named perforations, for the purposeset forth.

13. The combination of a Bunsen burner equipped with a main burner, agas-conduit through which gas is supplied to the mixingchamber of saidBunsen burner, a pilot-burner having a passage of adjustable sizelocated adjacent to the main burner and external thereto, saidpilot-burner having a passage connecting at the base of the burner-bodywith said gas-conduit, and a valve at the base of the burner-bodycontrolling the passage of gas to the mixer-chamber and to the lower endof'said second-named passage of the pilotburner, substantially as andfor the purpose set forth.

JOHN DOORENBOS.

In presence of WALTER N. WINBERG, W. B. DAVIES.

